/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMesh3.h
.... (dots are vertices) ../
Ok on success, or enum value indicates why operation cannot be applied. Mesh remains unmodified on error.
virtual [EMeshResult](API\Runtime\GeometryCore\UE__Geometry__EMeshResult) MergeEdges ( int KeepEdgeID, int DiscardEdgeID, [FMergeEdgesInfo](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3\FMergeEdgesInfo) & MergeInfo, bool bCheckValidOrientation )